Address For Accessories Or Modification Bikeshops

Hi guys, I'm from Singapore and need help on getting the address for accessories or manufacturers in Thailand for these bike models;

1) Honda Phantom TA150 and TA200

2) Honda Steed 400

3) Honda Shadow 400

I've been to Bangkok several times but only managed to find 1 or 2 bikeshops dealing in Phantoms. I need bikeshops dealing with steed and shadows as well.

I own a Phantom 150 and have bought and modify some stuffs since, and am looking for accessories for 400cc bike for friends. I am not able to find anything much.

I need the Shop name, full address (thai and/or english), telephone number, and contact person name. Best is the person can speak basic english, if not, dialect such as teochew. I am not that proficient in thai, so will have problem communicating if the person can't speak any of the 2 above.

Shops in Hatyai or Bangkok is fine with me. I'll be visiting Bangkok again soon, thus will need the infos b4 I leave in july. Will be driving up to Hatyai too.

Any magazines that I can subscribe to regarding modification of the above as well? I can't seem to find any...mostly are for handa wave, or yamaha cubs etc...

Thanks for reading and hope for some favourable replies soon.